<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div style="height:100%">
        <img src="../assets/pet.jpg" alt="" style="height:100%">
        <span style="color: #423f3f;font-size: 20px;font-weight: bold;">宠物服务管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>

    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <!-- 折叠就64px,展开就200px -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#fff" text-color="#303133" active-text-color="#3399ff" :collapse="isCollapse"
          :collapse-transition="false" :router="true">
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item style="padding-left:48px" :index="'/' + subItem.path" v-for="subItem in item.children"
              :key="subItem.id">
              <span>{{ subItem.authName }}</span>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <!-- 右侧内容主题 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      // 特定菜单的各个图标
      iconsObj: {
        125: 'el-icon-s-home',
        103: 'el-icon-menu',
        101: 'el-icon-menu',
        102: 'el-icon-menu',
        145: 'el-icon-menu'
      },
      isCollapse: false
    }
  },
  created() {
    this.getMenuList()
  },
  methods: {
    // 退出时清空token并跳转到登录页
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.mata.msg)
      this.menulist = res.data
      console.log(res)
    },
    // 点击按钮实现折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #fff;
  // 左右贴边对齐
  display: flex;
  justify-content: space-between;
  padding-left: 10px;
  align-items: center;

  >div {
    display: flex;
    align-items: center;
  }
}

.el-aside {
  background-color: #ffffff;

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: rgb(248, 248, 255);
}

.toggle-button {
  background-color: #afddfe;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  // 字间距
  cursor: pointer;
  // 鼠标放上去出现小手
}
</style>
